API Business Services - Base wheres
- Joël DRIGO
Implement a class extending the class com.noheto.restapi.APIBaseWhereBusinessServiceAdapter to add some where clause chunks to a query executed by an action.
Note that you have the alternative of prepared where services. It is possible to designate a context mapping of API-specific prepared where services, to have API-specific where bases.
See Bases
Methods
getPreparedWhere(Context context): global base where
getPreparedWhere(Context context, String id): this method is to associate base where clause to a base where id.
Context
The context provides some informations useful for the specific development of the base where.
getRequest(): returns the http request wrapper, allowing to find parameters, headers, etc
getSurfer(): returns the current surfer
getLocale(): returns the current invocation locale
getServiceId(): returns the service if (see class com.noheto.restapi.ServiceId)
getConfigId(): returns the configuration id
getObjectName(): returns the object name
getMethod(): returns the HTTP method name (resolved, including in case of method overriding)
Base where ID
This ID refers to a base where fragment identifier. It’s a feature used only by legacy service :
You create IDs of base where fragment (by example PUBLISHED to mean “pstatus = 6”
In the view configuration, you specify what IDs are needed
When invoking the service, the adapter is invoked with these IDs. For each ones, the method must return the fragment. The service will combine every fragments and other base wheres to get one final base where.
The method getPreparedWhere(Context)
This method is always invoked. Test the context to decide if you need to provide a prepared where in return or not (return null in that case).
The getConfigId() in the context refers to the name of resource and getObjectName() the name of the corresponding DB object.
Example:
public class ExampleBaseWhere extends APIBaseWhereBusinessServiceAdapter {
@Override
public PreparedWhere getPreparedWhere(Context context) {
switch(context.getServiceId()) {
case ServiceId.DAM_ASSET:
return buildAssetPreparedWhere(context); // the code of this method is not provided
default:
if ( context.getServiceId().startsWith("profil/") || context.getServiceId().startsWith("massimport/") ) {
return super.getPreparedWhere(context); // no base where
}
else if ( context.getServiceId().endsWith("/read") ) {
return PreparedWhere.load("pactivated=1 and pstatus=2");
}
else if ( context.getServiceId().endsWith("/create") || context.getServiceId().endsWith("/update") || context.getServiceId().endsWith("/create_or_update") ) {
return super.getPreparedWhere(context); // no base where
}
else {
return buildPreparedWhere(context); // the code of this method is not provided
}
}
/*if ( ServiceId.DAM_ASSET.equals(context.getServiceId()) ) {
return PreparedWhere.load("pactivated=1 and pstatus=2");
}*/
}
// ...
}